Kanthal wire Ø 0.25 mm

Replacement torsion bands for the Gravitational Torsion Balance (AP-8215A).

Set of four 4 oz bottles of mineral oil, for use with the Millikan Oil Drop Apparatus.

Allows students to conduct experiments to measure the speed of light. Reflect a laser off a movable mirror into a light receiver to measure phase differences.

Combines features that significantly improve the ease of setup, the durability of the Torsion Band and the quality of results. In the newer models the spheres are tungsten rather than lead.